People claim the 'rapture' is back on for this week because the wrong calendar was used

The supposed 'rapture' which was meant to spell the end of the world in September has apparently been rescheduled for this ...
fox6now

Leap year 2024: Switching from the Julian calendar to Gregorian

In honor of Leap Day, this read is for the history nerds. Ever wonder how America caught our calendar up with the rest of the world? In September 1752, we skipped 11 days. According to NASA, the Earth ...
The New York Times

Christmas Moves to Dec. 25 in Ukraine, Another Rebuff of Russia

The Ukrainian Orthodox Church formally changed the main date for the festivities, departing from the Russian tradition of celebrating on Jan. 7, according to the Julian calendar. Santa handing out ...
insider.si.edu

Chronology of the ancient world [by] E. J. Bickerman

I. The calendar: The day -- The Moon and the month -- The lunisolaryear -- Greek calendars -- The Athenian calendar -- The Macedonian calendar in Egypt -- The Egyptian year -- The Roman calendar -- ...